To find all the divisors of the number 1,000,000,660:
- 1. Decompose the number into prime factors.
- See how you can find out how many factors (divisors) the number has, without actually calculating them.
- 2. Multiply the prime factors in all their unique combinations, that yield different results.
1. Carry out the prime factorization of the number 1,000,000,660:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,660 = 22 × 5 × 41 × 919 × 1,327
1,000,000,660 is not a prime number but a composite one.
- Prime number: a natural number that is divisible (divided evenly) only by 1 and itself. A prime number has exactly two factors: 1 and the number itself.
- Examples of prime numbers: 2 (factors 1, 2), 3 (factors 1, 3), 5 (factors 1, 5), 7 (factors 1, 7), 11 (factors 1, 11), 13 (factors 1, 13), ...
- Composite number: a natural number that has at least one factor other than 1 and itself. So it is neither a prime number nor 1.
- Examples of composite numbers: 4 (it has 3 factors: 1, 2, 4), 6 (it has 4 factors: 1, 2, 3, 6), 8 (it has 4 factors: 1, 2, 4, 8), 9 (it has 3 factors: 1, 3, 9), 10 (it has 4 factors: 1, 2, 5, 10), 12 (it has 6 factors: 1, 2, 3, 4, 6, 12), ...
How to count the number of factors of a number?
Without actually finding the factors
- If a number N is prime factorized as:
N = am × bk × cz
where a, b, c are the prime factors and m, k, z are their exponents, natural numbers, .... - ...
- Then the number of factors of the number N can be calculated as:
n = (m + 1) × (k + 1) × (z + 1) - ...
- In our case, the number of factors is calculated as:
- n = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,000,000,660
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- Also consider the exponents of these prime factors.
- Also add 1 to the list of factors (divisors). All the numbers are divisible by 1.
All the factors (divisors) are listed below - in ascending order
The list of factors (divisors):
Numbers other than 1 that are not prime factors are composite factors (divisors).
neither prime nor composite =
1
prime factor =
2
composite factor = 2
2 =
4
prime factor =
5
composite factor = 2 × 5 =
10
composite factor = 2
2 × 5 =
20
prime factor =
41
composite factor = 2 × 41 =
82
composite factor = 2
2 × 41 =
164
composite factor = 5 × 41 =
205
composite factor = 2 × 5 × 41 =
410
composite factor = 2
2 × 5 × 41 =
820
prime factor =
919
prime factor =
1,327
composite factor = 2 × 919 =
1,838
composite factor = 2 × 1,327 =
2,654
composite factor = 2
2 × 919 =
3,676
composite factor = 5 × 919 =
4,595
composite factor = 2
2 × 1,327 =
5,308
composite factor = 5 × 1,327 =
6,635
composite factor = 2 × 5 × 919 =
9,190
composite factor = 2 × 5 × 1,327 =
13,270
composite factor = 2
2 × 5 × 919 =
18,380
composite factor = 2
2 × 5 × 1,327 =
26,540
This list continues below...
... This list continues from above
composite factor = 41 × 919 =
37,679
composite factor = 41 × 1,327 =
54,407
composite factor = 2 × 41 × 919 =
75,358
composite factor = 2 × 41 × 1,327 =
108,814
composite factor = 2
2 × 41 × 919 =
150,716
composite factor = 5 × 41 × 919 =
188,395
composite factor = 2
2 × 41 × 1,327 =
217,628
composite factor = 5 × 41 × 1,327 =
272,035
composite factor = 2 × 5 × 41 × 919 =
376,790
composite factor = 2 × 5 × 41 × 1,327 =
544,070
composite factor = 2
2 × 5 × 41 × 919 =
753,580
composite factor = 2
2 × 5 × 41 × 1,327 =
1,088,140
composite factor = 919 × 1,327 =
1,219,513
composite factor = 2 × 919 × 1,327 =
2,439,026
composite factor = 2
2 × 919 × 1,327 =
4,878,052
composite factor = 5 × 919 × 1,327 =
6,097,565
composite factor = 2 × 5 × 919 × 1,327 =
12,195,130
composite factor = 2
2 × 5 × 919 × 1,327 =
24,390,260
composite factor = 41 × 919 × 1,327 =
50,000,033
composite factor = 2 × 41 × 919 × 1,327 =
100,000,066
composite factor = 2
2 × 41 × 919 × 1,327 =
200,000,132
composite factor = 5 × 41 × 919 × 1,327 =
250,000,165
composite factor = 2 × 5 × 41 × 919 × 1,327 =
500,000,330
composite factor = 2
2 × 5 × 41 × 919 × 1,327 =
1,000,000,660
48 factors (divisors)
What times what is 1,000,000,660?
What number multiplied by what number equals 1,000,000,660?
All the combinations of any two natural numbers whose product equals 1,000,000,660.
1 × 1,000,000,660 = 1,000,000,660
2 × 500,000,330 = 1,000,000,660
4 × 250,000,165 = 1,000,000,660
5 × 200,000,132 = 1,000,000,660
10 × 100,000,066 = 1,000,000,660
20 × 50,000,033 = 1,000,000,660
41 × 24,390,260 = 1,000,000,660
82 × 12,195,130 = 1,000,000,660
164 × 6,097,565 = 1,000,000,660
205 × 4,878,052 = 1,000,000,660
410 × 2,439,026 = 1,000,000,660
820 × 1,219,513 = 1,000,000,660
919 × 1,088,140 = 1,000,000,660
1,327 × 753,580 = 1,000,000,660
1,838 × 544,070 = 1,000,000,660
2,654 × 376,790 = 1,000,000,660
3,676 × 272,035 = 1,000,000,660
4,595 × 217,628 = 1,000,000,660
5,308 × 188,395 = 1,000,000,660
6,635 × 150,716 = 1,000,000,660
9,190 × 108,814 = 1,000,000,660
13,270 × 75,358 = 1,000,000,660
18,380 × 54,407 = 1,000,000,660
26,540 × 37,679 = 1,000,000,660
24 unique multiplications The final answer:
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